Question

Which of the following observations most strongly support the view that mitochondria contain electron transport enzymes aggregated in compact association?

• A. Mitochondria have highly folded inner wall
• B. Disruption of mitochondria yields membrane fragments, which are able to synthesis ATP
• C. A contractile protein capable of utilise ATP, which has been obtained from mitochondria
• D. Mitochondria is animal embryos have tendency to concentrate in cells, which are to become locomotory structures

Answer 1

Answer: (B)

In the inner membrane of the mitochondria, electrons from $NADH$ and $FAD{H}_2$ go through the electron transport chain to $O_2$, to yield water. It consists of a series of reactions that transfer electrons from donors to acceptors and couples this exchange with the transfer of $H+$ ions across the membrane creating an electrochemical proton gradient which drives the formation of a molecule that stores energy in the form of highly strained bonds. This energy rich molecule is adenosine triphosphate (ATP). The enzyme responsible for ATP synthesis is ATP synthase.